The last two challenges cover the basics of displaying data dynamically with D3 using the <code>data()</code> and <code>enter()</code> methods. These methods take a data set and, together with the <code>append()</code> method, create a new DOM element for each entry in the data set.
In the previous challenge, you created a new <code>h2</code> element for each item in the <code>dataset</code> array, but they all contained the same text, "New Title". This is because you have not made use of the data that is bound to each of the <code>h2</code> elements.
The D3 <code>text()</code> method can take a string or a callback function as an argument:
<code>selection.text((d) => d)</code>
In the example above, the parameter <code>d</code> refers to a single entry in the dataset that a selection is bound to.
Using the current example as context, the first <code>h2</code> element is bound to 12, the second <code>h2</code> element is bound to 31, the third <code>h2</code> element is bound to 22, and so on.
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## Instructions
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Change the <code>text()</code> method so that each <code>h2</code> element displays the corresponding value from the <code>dataset</code> array with a single space and "USD". For example, the first heading should be "12 USD".
